generally short tip life is related to low battery voltage, but in the EV100/200 panels case it also could be due to a defective 1A contactor according to the troubleshooting guide for this system.
If the contactor is sticking/binding it can create a high amp situation when the system calls for the contactor to open therefore burning the 1A tips along with the F&R tips as well.

One other problem could be incorrect BDI settings allowing the system to draw the battery down too far creating a low voltage/high amp situation in the system, therefore taking us back to the low voltage scenario.

Have you contacted RICO about this to see if they have any service grams on this issue? and how to resolve it? They are generally fairly helpful and in most cases will provide you with any information you need.

Give it a shot they might suprise you